the diameter of a garden roller is 1.4 m and it is 2 meters long how much distance will it cover in 50 revolutions

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Solution

diameter of roller = 1.4 m radius of roller = 0.7m = 7/10m lenght of the roller = 2m area covered in 1 revolution = CSA of roller = 2 pi rh = 2 x 22/7 x 7/10 x 2 = 88/10 =8.8 m2 therfore,, area covered = CSA x No. of revolutions i.e , area covered in 5 revolutions = 8.8 x 50=440 m2

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